Microbiological Profile and Quality Assessment of Unbranded Groundnut Oil Marketed at a Major City in Nigeria, Sub-Sahara Africa.
Journal Title: Invention Journal of Research Technology in Engineering & Management - Year 2018, Vol 2, Issue 3
Abstract
This work was conducted to assess the microbial profile and quality attributes of unbranded groundnut oil sold at Keffi. A total of 25 samples of unbranded groundnut oil were collected from different locations and subjected to microbial and quality assessment. The total viable bacteria count ranged from 2.1–7.2 × 105 cfu/ml, while the total faecal coliform count ranged from 2.2–6.2 × 105 cfu/ml. The Salmonella/Shigella count ranged from 1.4–4.2 × 105 cfu/ml and the fungal count ranged from 3.6 – 8.2 × 105 cfu/ml. The microbial isolates obtained were Mucor spp., Aspergillus flavus, Aspergillus niger, Rhizopus spp., Penicillium spp., Staphylococcus aureus, Pseudomonas aeruginosa, Bacillus spp., Micrococcus spp., E. coli and Salmonella spp. Anti-biogram of the bacterial isolates revealed a varying level of resistance/susceptibility to the antibiotics tested. The result of mineral contents analysis showed that all samples had high detectable levels of Zn, Mn, Fe, Cu, Cd and Pb. These results indicated values that exceeded the maximum limits set by regulatory agencies, thereby making these oils unsafe for consumption. It can therefore be concluded that it is imperative for the manufacturers of these products to adopt good manufacturing practices and ensure proper quality assurance of their products.
Authors and Affiliations
Abdullahi S Onawo, Muktar O Adamu
Keywords
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